Block-molding machine.



En AUG. 11

i SH

u w. BENNETT ...y 1.... l v

BLOCK MOLDINU MACHINE. APPLIcATIoN rusa ocr 5, 19o-f PATENTED AUG. 11, 1908..;

E. B. sa W. W, BENNETT.

BLOCK'. MOLDING MACHINE.

APPLIGATION FILED 0C'I.5, 1907.

4 SHEETS-SHEET 4.

1 EL @l E A 1 UNITED STATES PATENT OFFICE.

BLOCK-MOLDIL C* @LAC HINE.

"'i't': all -irllom it may conccrn:

Bc lt known that wc, Rl'- xnr'r and WILLIAM W. lh:

tho li'nitcd Statcs, rcsiding at 'cstcrvillc. in the count ol' Franklin and Statc of Ohio, have. mvcntcd curtain ncw and uscful .Imfi

provclncnts in Block-Molding .\achincs, of which thc following.r is a s wciticatiun.

'l`his`invcntion comprc icnds ccrtain ncw 13 and uscl'ul improvcmcnts in machincs for .forming concrctablocks, and thc invention has for its` nintarv oh'cct a mat-him of this .l

charactcr which will hc. practicallv automatic. and actuatcd hy gravity and onc in 15 which this forcc or work rctptircd to show-l tht` matcrial into thc tnachinc is storcd up and utiliz/.cd in tho operation 'ot thc samc.

'lhc in'vcntion also has l'or its ohjcct a machine ol' this charac-tcl' in which thc cntirc l mold and its supporting iramc is monntcd to tilt upon an clcvatcd axis in such a manncras to maintain thc mold parts` always in thc l .samc rclativc position so as to insuria pcrfcc-t block aty cach dclivcry. And a ftn'thcr ohjcct of thc invcntion is to providc a machim` ot' this` typc which will ho coxnposcd ol' `compa'ativclv fcw and simplc parts that may ho readily asscmblud and that will hc durahlc in ctmstruction and cfticicnt in opcr- 33 ation, and in which thc` parts arc so halanccd that. tho mold will hc movcd from its tilting.r posit-ion to its discharging position h v thc action of gravihv, which will dclivcr its contcnts in complctcd condition h v thc action ot'gravit whcn thc parts arc rclcascd h v thc opc "ator, and which will thcn antomaticallr \mo\'c hack to tht` tiltingposition, rcady for a. succccding opcration. 1

with thcsc primar): ohjccts in vicw and 11 with othcr ohjccts in vicw as will hcrcinal'lcr morc. l'ully appcar as thc dcscription procccds, thc invcnt .l consists in cci-tain constructions. nrrangcmcnts and combinations of thc parts thatl wc will hcrcinaftcr dcscrihc and thcn pointv outI thc novcl leatnrcs and combinations thcrcoi in tht` appcndcd claims.

For a l'ull nndcxstandingol' thc invcntion. rcl'crcncc is to hc had to thc following dcsctiption and accolnlmnying"drawings, in

which:

Figurc l is a pcrspcctivc vicwofalr improvcd gravity actnatcd mold: Fig', a lransvcrsc sot-.tional vcw, with tht` mold im thi` posit ion it. assumcs whcn thc lrlock is com- Specification of Lettiers Patent.

slam, B. Bizx- Patented Aug. 11, 1908 5. 1901; sesamo. 396,101.

"a ditail pcrspcctiv(` vicw otono of tic ond doors of thc mold; Fig. :3 is a dctailhoti-fl..- xontal sectional vicw thcrcloi: Fig. t is a-der tail ncrspcctive. View of onc ot'tln` stirrups'- of `60 thf` strippvr hack; Figj is a dctal pcrspcclivc vicw of thc-joint `hctwccn thcjointd j lcvcrs: Fitz. ti is a horizontal scctional view.; oi thf.` moldFig. 9 `Es a detail pcrspcctive. vicw of a portion of ono I'orm'ol' allot sup-"65 porting carriago; Fig. l0 is n simi ar AYicw of anothcr cmlpodimcnt of said "arriagc;i."gs. l1 and It a'rtl dctailvicws otom` of thc tup-i' pct arms; Fig'. l2 is a dctnil ricw ofonc form of cor(` and division hoard comhincd, inns-'N70 tratin; thc ifncans h v which such parts may hc dc'achalzlv conncctcd to thc core hack; l ljig. 13 is a. .-imilz1r.\icw of a. half core with a. division hoard fornicd thtrcwith; Fig'. 1-1is a dctail vicwz of a division hoard arrangcd for'it' conncction to tho coro-hack and dcs'igned'to i hij uscd with/'att th(` corc: and, Fig. t5 is adetaivl scctional vicw illustrating thc joint betwccn thc st rippcr hack and thc cnil doorsm hcrcinattcr spccitically rcfcrrcd to. 'go t`orrvs|mn ling.r and liltc parts an` rcfcrrcd to in thc t'ollt`\\'in dcscriptlon and indicatqd in all thc vicws of thc drawingsh`\ thc santc rcfcrcncc charactcis. A l

'lhc molding` nntchintl Yol`our invcntion5`35 coinpriscs a' supporting liasc or stand 0inhodyin.;r two standards. cach of which, in the prcscnt instancc, ct-.nsists ot' a l'oot portion "l, an npwardl)v cxtcntiilrgr lug 2. and a hracc 3` contnctinj..r thc lcg and foot portion. sprawlcis or cross hraccs -t connccting thc two standards tn clhcr at tht` propcr pointI to prodncc a substantial and sutlicicntly rigid structurc.

'lhc mold supportingr iramc compriscs sills 95 or sidi` rails 5 that arc pivotally monntcd. intcrnndiatc ot' tht-ir cnds and prctcrahl)v ncarcr onc cnd than tlu` othcr, on thc hon# '/.ontally cxtcndilr;r axis or shaft t' journalcd to rotatc in thc uppcr cnds ol' thi` standards. 100 trans\'\crscl.\' cxtcnding l'nlcrnm rnd .is. mountcd at onc cnd of thc mold supporting: iramc and land lcvcrs N arc l'ulcrnnaal atonc cnd on' said Fulcrum rod. 'lhc hand lm'cls may la' prorillcd at thcir oppositc cnds with 105 any dcsircd forni or construction of grips E). Links lt)-',:nncct thc haml 'lcwcss wit-h thc corc-lmcn` l l, pt'cl'cralily ncar tht` cttds of thc la'ttcr, and s d cow-hack carrivs thc \prcl'crahl`\' rc|no\'ahlt"and :nljustahl-` cortsno l\=tnd tht` Pl'cffrahly t'clnovahlc :md ad- A.

itxstahlc` division lmards l2?, that arc rigidly secured tothe core-back in any desired wa)v after `the desired adjustment has t'iecn etfet-ted,` according to the nunioer'am widths of blocks that it is desired to mold at tle one operation. Obviously fractional size blocks may made with ease, uniformity, and rapidituthe same as the regular sized block, thereby producing the broken ashlar eil'ect so much desired by architects. l

14 desi nates the stripper back` of the moid whic i is provided at its ends with the preferably rectangular stirriips l5 and guide rods 16 are secured to the coro-back 1l, and are mountedto move longitudinally .in the guide bearings 17 that in the present instance are formed as collars extendingr from one end of the respective side rails 5 ol the mold suprting framework. The core-back 11 has atch arms 18 secured thereto near its ends, said latch arms being preferably provided with rolleis 19 designed to eng ige the flanges 20 on the respective: end doors 21 of the mold, so that as the hand leve is 9 are rocked forwardly and the core back f3 thus carried against the outer or rear face of the stri per back, to pass the cores, or the cores an division boards into the mold, these latch arms Will be carried into engagement with the flanges of the doors and securely hold the doors in closed osition. The doors 21 ma f be provided wit knuckles 22 through wliic i a pmtle may extend so as to 'einge the door to corresponding knuckles on the frame-like or skeleton carriage 23 that is designed to su port and carry the removable pallet 24. its elevated position, read to receive its contents, the mold is securely supported by means cf one or two struts 55 that arc pivotallv suspended from the side rails 5 and that. are formed at their ends with feet 26 dcsigned for engagement `with lugs 27 project ing inwardly from' the respective legs 2 of the standards.

2S designates trips that are designed to disenqage the struts rom the lugs 27, said trins "being preferably-carricd on the outer ends of a transversely extending bar 29. The said bar is secured intermediate of its ends to the releasing lever 30 which, in the present instance, is in the forni of a foot treadle formed in its lower cdffe with a socket by which it is dctachably fulcrunied on one of the spreadeis 4 of the supporting stand. B5' depressing the outer free end of the lever 30fitis obvious that the struts may be disengsgcd from the lugs 27 so as to xio longer support the weight of the filled mold. ly mounting the releasing lever 3i) removably, itmav be taken out of the way, together with the releasing bar 29, so that clear access may be had underneath the machine for the purpose of cleaning or the like.

Counterbalancing arms 31 are freely pivoted at one end on the outer ends of the shaft 6 and extend rearwardly, as shown,

-sei s,414

and the weights 32 are 'carried on the outer ends of said arms. Links 33 are connected at one end at the 'points 34 to the counter- .balancing arms 3l and the other ends of said links are connected to the outer ends of extension members-S of the lovers 8 said extension members having a limited joint contion, in the present instance being effected by mount-ing the extension members c on the ends of ihe fulcruin rod 7, one end of each extension member overlapping the corresiich leveLS is designed to'engago when moved a. predetermined distance in one direction, so that the continued movement o the two hand levers in such direction will effect a coincident movement of the extension niembeis S". It will be noted, however, that the hand levers 8 have a certain movement independently of the extension ineinbers 8".

When the mold is empty, the weight of the counter-balancing arms 3l and such parts of the mold supporting' frame to the rear of \the axis or shaft 6, together with the other related parts, is sufficient to hold the niold in the elevated position illustrated in Fig. 3. This is the position in which the mold is in readiness to receive its contents. In operation, the rich facing is first placed in the mold and the coaiser materia. used for the main body of the block is tamped directly on the faciiiv. When making the revuliir sized block. the latch arms 18 are mover until their outer rollers clamp the end doois 21 a ainst the stripper back to lock the mold cosed while the cores are still out of the mold, and the block is then tamped up to a the hand levels S are drawn further forwardly so as to insert the cores, and thc block is finished. Iii making the small blocks, the facing is placed in the machine, the division boards or plates 13 are drawn forwardl) with cores 12 bv theinaiiipulation of the hand levers S andthe covrser material is then delivered iiito the. mold and taiiiped to the facing `through thc spaces between the cores, the tamping being continued until the block is finished.

It is to be understood that the parts are so balanced on the axis or shaft 6 that the weight of the completed mold will overhalance those. movable parts of the machine that are to the rear of the axis 6 when the mold is finished. To hohl the mold cle-rated until it is desired to tilt the frame and discharge tho completed produce, the struts 25, hereinbvfore described, are provided.

lVhen the block is' finished,- the operator merely places his foot upon the releasing engaging the stints from their lugs 27, and

nection with the. hand levers, such connec-i spending enrl of its respective lever 8 and being provided with a lug 35 with which` predetermined point in the mold, aft-cr 'which los l lever 3U and presses the same, thci"cl,-y lisi i l l l i l *the reby ermit-ting gravity, or the weightI of ythe molt itself with the completed blot-k,"

A which constitutes the power, to operate the lol :idiustable mounting of the .said dogs,

maehine. The travel of the weights 32, the dillerent positions they assume, and the combined movement of the compound leveis composed of the counterlntl-tnce arms 3l, links 33, and levers 8, are such that the block is almostv on a perfect balance at anv- )oint in its tra-verse from the position .shown 1n Fig. 2 when just completed, to tlte position at right angles thereto, as shownin Fig. l, just preparatory to the automatic opening of tito mold, and the delivery of the completed blok or blocks. In other words, verhv little, if any, assistance t-o the aetion of gravity is neeessary to turn the bloek over after the operator has released the mold from its. eievated position, and it is obvious that it is within the purview of our inventionto so arrange the parts that the mold will of itself lower and turn over, to the disrharging position illustrated in Fig. 1, as soon as the operator depresses the releasing lever itt). ln the delivery position, it is noted (see Fig. l) that the eateh or detent 30 ol' the releasing lever 3() automatically engages a portion of the mold so as to lock the maehine in sut-h a position until the blot-.k is turned over ou its pallet, and the eores and divisions, or both are pulled vertically from the maeliine, while the mold parts are still in eontact. In this eonneetion, it. is to be remarked, and will be elear that. by the combination used` the withdravi'al ol" the eures is not limited to this vertical iosition, noi' to any one position of the. molti, as heretoloie praetieed before our invention, and that the eores or (and) division boards may be withdrawn in whole, or'in part, l'rom any position on the mold. to wit, from a hori/.ontal to the vertii-al, and that this` withdrawal ma) be autoinaljiallv ell'eeted at, any desired point during the movement ol' the mold. lo ai-i-omplish this, one member ol' either or both stirrups l5 ma)l be formed with a limgitudinal slot Zt in wliie-h a dog 37 is pivotall) held b v means of thov adjustable elampingfbolt 3S, the hooked end It!) oll they dog be ng designed to engage a linger 4U projeeting out from the i-ore baek ll. As the mold supporting frame tiltsl from its initial horizontal position `towards its disi'harging vertir'al position, it is obvious that the weight nl the mold will eause the latter to draw away from the corebaek until the dog, or dogs, 3T .shall have engaged the linger, or lingeis, tu of the eure-baek, whereupon the eore-baek will be eoinpelled to move with the mold. l the relative or independent movement o|` this lln` ini-.ld or those parts thereof that support. the l completed produet, may be varied, so as to f ell'eift a eomplete or partial withdrawal or stripping ol' the eures and or) division boards. This stripping of `the eores and division boards fronrthe mold while. the bloek is being turned overis accomplished without. the assistance of the operator by the power herein utilized, namely, the weight. of'the block itself and the eouuterbalaneing ell'eet of the weights.

In further explanation of the :iet-ion of the dogs 37, it should be. stated thatv those arms of the stirrups that earr the dogs 37 lie horizontal when the mold is in its initial rei'eiving position. Alter the parts of the mold have been eonipletelv elosed, the dogs 3T are set eross wise ot the arms whieh earry them so that their hooked ends will lie in the )ath of the lingers` 4() of the eure-baek. lt is to belunderstood that the withdrawal of the tmold from the core-baek, or the relative independent` movement of the latter takes plaee v. hun the mold is being swung from the horizontal to the vertieal position, but so soon after it h as lel`t its elevated horizontal position that the lingers -ltl will engage with the hooks of the dogs 37 before tlit said dogs shall have assumed a position where their weighted ends will swing them out of' the way ol the lingers. Thus, the engagement.'

between the. lingers nml the hooked ends of the dogs will be ell'eeted properly and thev will obviously be kept in engagement until a slight. downward pressure upon the hand grips E) upon the levers will move. the eorebaek vll slightly in a downward direetion to permit gravitv to release the dogs 3T from the. lingers 4t). In the movement. of the mold l'rom its elevated reeeiving position to its lowered delivering position, the latch arms will obviously release. the end doois of the mold, but. it is to be undeistood that-.the proportions ol the parts are sui-li that. ilie .said lati-h arms` will maintain engagement.

with the [langes of the iloois and hold Ilieni 4elosed upon the outward movement ol' the the l vers N, gravit) will release the :idjiist or dogs 67, and the weights Il. will able dog'` eommenee to travel downwardlf. lluring this travel of the weights, the eure-baek ll is raised liiitil the bosses -ll of its guide rin:- lt si rike the upper eross-bais of the stirrnps l5. rl`l iis will limit the indi-pendent. upward movement of the i-ore-baek (to which is seiured thi-eures or division boards, or botlii, and the eon'tinued downwardmovi-ment of A .A.s............... H... ...5. ..-M -....M..

v'the weights will then raise the per back jfeled ends will have a cam action on the. outer ends of' the doors and thereby positively swing the saine in an outward direction. The mechanism for delivering thiJ completed block comprises the. crank arms 42 which are rigidly secured to the. shait G, preferably hetween the standards, as shown, and -whit-.h are connected by the. itmcn 43 to the skeleton carriage 23. This eaiiiagelis mounted to slide on the. shafts 44, suitably connected to the side rails of the mold supporting frame. Tappet arms 45 are rigidly secured to the outer ends of the shaft 6 in juxtaposition to the pivoted ends of the eonnterb lance arms 3l and the latter, in their downward movement, are designed to strike the lugs 46 of the tap; et arms so as to rotate the axis or shaft 6 thereof, swing the crank arms 42, and move the carriage 23 outwardlv to deliver the block. 'lhis delivery is mai e adjustable lby means of set screws 47 in the lugs 46 of the respective tappet arms 45. As the carriage 23 with the pallet on it moves outwardly, as described, the face plate 4S of the. mold tilts rearwardly, so that. the block is now freed on all sides, except one and is in readiness to he removed on the pallet 24.

n one arrangement of the. parts, the face )late 48 is provided with projections 49 loriiieil with sockets that receive the horizontally extending studs 5t) projecting from the vertical lugs of the carriage 23. As the face date 4S is thus mounted with its greater weight. below the. center of the pins 5t), gravity causes the said face plate to`tilthackwardly from the iii-:e of the block and rest as a support. on its angular edge, as soon as the carriage has moved outwardly.

As a modified form of mounting for the face plate, reference is to he had to Fig. it) from which it will be seen tha-t the face plaie. may he. provided with projections 49'* in the. nature of dmvels designed to rest loosely ii'i sockets ."il ol' thc carriage 23, so as to tilt .hackwai'dly when the carriage is moved ont-- wai il ly.

The operator may now release the mold supporting frame. from its delivering position, b v again depressing thi` lever Ztlso as to release the detent. Btl", whereupon the greater weight of'the comitcrbalnncing arms IH and tlicir rclatcd parts will be sulliciciit to curry the mold parts backwardly to the initial position, that is, to the. elevated iosition. Preferably the operatoi-will start this movement by ushing baekwardly to a slight degree ont ie guide-rods i6. As the. o erator presses backwardly on the said gui( e rods, pressure on the jointed levers is released at the point 35 and the stripper hack will then 70 move downwardly to its pi "iper osition by gravity. Since the stri ,per bini doesnot. have to travel as far as i io outer ends of the end doors, it. will reach its position befo'rethe doors .reach their position, and finally, as the mold swings bacliwardly and upwardly, the end doois are closed inwardly by any desired means, either by hand or otherwise against the ends of the strip ier bach, so as to prevent the stripper back from again moving out.- so

'wardlynnd to hold it in proper relation to the other parts of the mol so that now the mold is in its initial or receiving position and is locked therein by moving tlie latch arms until theirl outer edges just. engage, the doors. 55 It vill thus he. seen that gravity raises the mold upwardly to receiving posit-ion as well as operates the machine, after a block has been made, to lower the. mold to a receiving position.

From the foregoing description, in connection with the. accompanying drawings, it will be seen that we have provided an ellicient gravit y actuated concrete block moding machine in which the levers S work' entirely 95 independent, of Vtheir extension members 8, when the machine is in position for making blocks, and it is desired to insert the cores' or division hoax-ds. or to withdraw them horizontal y, that the corcs may be :it any angle `from a horizontal )osition to a. vertical position, inclusive. lurtherinore, among the advantages that we secure by the lic-rein-described construction and arrangement of the parts, may be mentioned the'fios gain. in liihor and time by tho automatici. s withdrawal of the cores, as compared witlr the methods usually employed. ,i

liv our invention, the entire'mold and the hloclc are maintained in the same. relative 11o position to cach other, either parallel, or at right angles fimn the time the machine is ready to receive its facing, u'ntil the block is made. when the cores are )ulled, and the siiippcr hack lifted from the ilock, the cores 115 are siill at. right angles to the face o the block, all parts of the machine werk harmoniously and have. a symmetrical arrangement, then-hy insuring a perfect product at' each opci.:tioii of the machine. and enabling 120 (im maehine in he operated with ease. As the division hoards are clamped to the, coro hack and. withdrawn by the machine, and inseied by the lcvcis wiiliout the. necessity of touching or placing them .in position by i25- liand, it is obvious that. a true. division is insured. The machine is automatic in its ac? tion throughout, the operator unconsciously furnishing the power to operate. the machine,

l when he shovcis in t-he material, and after 130 withdrawn the rtltatsiug over u utl possihl)Y stunt' little assistant-o in utttirntng thv nntt-lnntto thtmoltling:r position.

As thtl joint hctwton tht` entl tloots und tht'. stt'ipptt' hut'k is n hvvoltwl ono, ns best seen in Fig. 1L. it is obvious that the tloors will bt'gn to opt-n as soon :is tho Q stripper back starts to leave the blot-lt, thm-ts b v insuring,r that thtl tloots will full opt-u hy gravity, clout" uwuv front the cntls of thv blot-k.

six'etl to autonntlitnlly withtlraw tht: tron-shottrtls nrc uutonmtitvtllv withtlnwn the stuut. :ts tht coros'. or :ill inst-rtttl 2s n unit with thttorts. Figslll. t4 :intl lillustrte .stvvlztl t'tnlmtlittttttts "if tlu: ('HTLS :mtl (liVc sion hourtls. ln Fig- 1.3'. il will he seen-that tht` tlivision honrtls .ent forint-tl in ontl -pitcc ith tht t-ttrts :intl :e:v-'ptovitit-tl with tttrs hy which they muy he 21min-tl to thtt'orcllzettrk. Fig. l-t illustrates time mntngctnt-nt ol' parts whtrt. :t cot-t` is not usctl, showing; tht` tlivision liotntl itstif formati with :tttut'hing cults which tnn v ht` strtirttl to tho coro-buck. Fig. l5 shows un :trmngttut'ut -like Fig. 13, txt-tpt only :t hull votre is usvtl in t'ounotttion with thtl tlivision llsmrtl. )Innifvstly the tlivision hout'tl muy btsct'ttrvtl to thv ttn'ts in :my tltsirttl \v.t By sut-h nrrungtuntnt-I the stmtll hlot-ks :tro umtl out as. wtll us the larger onts.

l. 1n n nmvhinuoftht-rtm1-:tutorlt-scribed, thtt-outhinntion ofat tilttthlv moltl supporting frnntv, :t statuti thtrvt'or, :t molti otnhotlyintr .svpttruhlo parts ntotsnttttl on suitl fmtnc unt nrrttugt-tl to tnovt .from :tn tltvxttttl rvceiving :osition to :i tovxttwtl tivlivtriug position l1-v tltt` uvtion of gravity. :intl :nouns for nut-onnttitully opt-nin`r tiwtpnrts of the tltoltl.

.ing stpurulilc puits :nt-nntvtl on snitl l'lunlo :intl nt'tungttl to move 'from :tn clevtttttl ret-viviugr position to a lowtrttl tltlivoring"r position h v tht- :tt-tion ot' gravity, :mtl menus for :ttttontzttitztlly opening, by thc 'nt-tion of gravity, tho parts ot' tiltA molti.

2;. tnoltltng unit-hint, comprisingttsttlntl, :t inoltl sttpportiu r t'rmnw tztnuntt-tl to tilton suitl stuntl, :t -ntoltl :ttountttl on suit! stuntl, u tnoltl utountttl on sttitl fmnw :tutt tunhotl'ing srpuruhlt ports :tuti :t snub-ark. cores or the likt' .st-t'ttt'ttl to sztitl roto-hawk, liti* nttttt he* in; ut'ratngttl to tiit En; gravity so :is to Cttl'ty tht" ntoltl from :in ot-utvtl nctiving position tt :t lowtrttl tltlivt i; iositinn, mruus for :tutonnttit'ully withdrawing thtl cotts tutti tort-lmtlt from tht` ttnmining parts ol' thc ntoltl tlugiug sut-h nmvmuvut. :unl tntuus for opt-ning sut-h ttunztittztg parts of thtmolti.

4. ln t'. tnoltling nzztvinnt. tlat' t-.\:t.l inutiou ot'tt stuntl, :t tnoltl supporting t'rntnt` tnountvtl to tilt ot: suitl stanti. :t moitl snpportttl on saitl l'r:nnt.`:.ntl enzit-mlving; stpttrtthlt )urts intlntlin;y :t vow-hack :intl cortas tutrrivtl t torcl) v. tht* t'rutnt` lit-in; :.I'mngml to support tht" tnoltl tltvtttt-tl in mivitw position :intl to lowt-r tht` lnoitl tu u delivering position, nimtns for uutonnttitza'ilv stripping the core hut-k :unl cores front.: the nzoltl tluring tht` movtunvnt of thtx limiti from the receiving pusition to delivering position. anti moans for auttlunuticnlly iimitag'tht stripping movement to a ptletenninetl pointist j 5. In a molding machine, the combination ofa stand, a -mold'su )porting frame mounted to tilt on said stand, a mold supported on said frame and embodyingseparable arts including a core back and cores carried t iereby, the frame being designed to hold said mold elevated in receiving position and to carriv the mold downwardl) to delivering position, means for ell'cctiiig an independent movement of the mold relative to its core back during such movement, and means forv vaiving the amount. of such independent. movement.

6. ln a molding machine, theconihination of a stand, a inolilsiipporting frame. mounted to tilt-'on said stand about. a horizontal axis, a. mold supported on said frame at one side of said axis, counterbalancingmechanism connect-ed to said frame at the other sideof said axis, means for locking the mold supporting member with the mold elevated in receiving position, means for rele: sing such holding means to permit the meh supporting memher to be tilted so as to carrythe mold downwardly to delivering position, a connection between said countei'halaiiciiig mechanism and the mold members and arranged to elfe-ct, b v gravity, the complete opening of the mold alter it has been moved to tlie\i.lelivering position, and i'neans carried b v si id -releasing means for automatic-ally holdingtlie mold supporting frame with the mold in lelivering position. 'Y

7. ln a molding machine, the coinhin'atnm of a stand, a mold supporting frame mounteilx to tilt on said stand about a horizontal axis, a mold supported on said frame at one side of `said axis, c(niiiterhalancing mechanism connected to said frame at the other side of said axis, means for locking the frame with the mold in elevated receiving position, meansfor relcasingsiwh lockingr means, means for tilting the mold supporting frame in the direction t-o carry the mold downwardly to a delivering position, means for opening the mold, said releasing means being provided with means for holding the mold supporting frame with the mold in delivering position, and means whereby the countcrbalancing mechanism will return the mold supporting frame.' to its 'initial posit-ion so as to again elevate the mold upon a second actuation of the said re leasing means.

N. In a molding machine, the combination of a stand, a mold supporting frame mounted on said stand, a mold supported on said frame and embodying separable members including end doors and a core-back, a hand lever fulcrumed on said frame and o1'ierativel v connected to said corediacli to iinove the saine towards and from the other parts of the mold, and latch arms secured to said coreback and arranged to embrace the doorsto loc-k the same in closed position.

9. In a ,molding machine, the combination of a stand, a mold supporting frame mounted thereon, a mold su )ported on said frame and embodying separa e members including a. core-back, means for moving said core-back towards and from the other arts ofthe mold,

said mold members also inc uding outwardl opening doors, said doors being provided wit tia-iiges, and latch arms secured to the ends of the core-back and designed to embrace said doors, said latch arms bein-g provided with rollers arranged to ride upon and bear against the said flanges.

10. In a molding machine, the combinat-ion of a stand, a mold supporting frame mounted thereon, a mold su i )orted on said frame and embodying separa le members including a core-back and cores carried by said eorebaek and also including outwardly opening end doors, said doors heilig provided with Ha-nges, means for moving said core-back towards' and from the other parts of the mold, and lat-eh arms secured to and carried by the ends of said core-back and provided with rollers bearing against said flanges, the relation of said latch arms and their rollers and said flanges and cores being such as to maintain the engagement of the rollers and anges of the doors, upon the outward movement of the core-back until the said cores are withdrawn entirely from the mold.

11. In a molding machine, the combinat-ion of a stand, a. mold supporting frame mounted to tilt upon said stand, a mold supported on said frame and embodying separable members including a core-back, hand levers ulcrumed on said frame and operatively connected to said core-back to move 'the same towards and from the other mem;

said' extension lever members, said frame being arranged to tilt in a direction to lower the mold and rock the levels and their et(` tension members and effect the raising of the Counter-balancing arms, means for opening the mold, and means wherebv the mold in open condition will be carried backwardly to its upper position by said counterbalancing arms subsequent to the opening operation.

12. In a molding machine, the combination of a stand, a mold supporting frame)- mounted to tilton said stand about a. horizontal axis, a mold supported on said frame at one side of said axis and embodying separable members, counterbalancing arms conneeted to said frame at the opposite side of said axis, the parts being arranged to raise the coui'iterbalancing arms when the frame istilted in a. direct-ion to carry the mold domiwardly, and means eflected by the wt'ght and do .iward movement ot` said coni-iterbalancing'arms for openingr the niold.

i3. ln a molding machine; the combination of a stand, a' mold. supporting frame mounted 'intermediate of its ends on ysaid stand to tilt about a horizontal axis, a mold supported on said frame and embodying a pallet, end doors and a face platelocated on one side of said axis, and also including a stripper back and a core-back adapted to be initially supported on the frame on the opposite side of said axis, means for moving said core-back and strip )er back to the other paris of the mold and its axis in a direction to lower the mold,l and means for automatically raising the coreback and stripper back relatively to the other parts of thevmold, about. the axis of the frame` subsequent to the tilt-ing ot' the frame. whereby the weight of said core-back and stripper baal: and their related parts will be exerted in a direction to move the frame back to its initial position.

ll In a molding machine, the combination of a stand, a mold supporting frame mounted to tilt on said stand about a horizontal axis, a mold supported on said frame. means for moving the frame in a direction to carry the mold from an elevated receiving position toa lowered delivering positioii.said mold iiicludilig an'outwardly movable pallet supporting carriage and supports for said carriage, means for opening the mold, and means for automatically niovingsaid carriage outwardly with the pallet on it subsequent to the. opening of the mold.

l5. ln a molding machine, the combination o! a stamt, a mold supporting frame mounted on sai-.l stand to tilt about :i horizontal axis` a mold supported on said frame. means for tiaing said frame in a direction to carry the mold from :iii eievated receiving position to :i lowered delivering position, said niold including an outwardly movable pallet supporting carriage, and supports l'or such carriage. crank arms secured to said axis and operatively connected to said carriage. meansfor opening the mold` and automatic means for turning the axis in a direction to move tite openingr movement, said inold opening means being also arranged to actuan-*the carriage moving means.

t6. ln amoldingmachine. the combination oi' a stand, a mold supporting frameinouiited on said stand to tilt about a horiyoiital axis: a mold supported on said frame. means for tilting the traine in a direction to move the mold from an elevati-d receiving position to a lowered delivering position, said mold including an outwardly movable pallet sapporting carriage.` crank arms connected to said axis and movable therein, pitnien vconneming said crank arms to said carriage.,

for tilt-ing the frame on counterbalancing :mns p'ivotally mounted on t said axis, and arranged to open the moltb and tappetl arms secured to said axis :ind arf ranged to be. engaged by said counterbala ieing arms at the completion of their hield opening movement, whereby to slide the; carriage outwardly- 1?. ln a molding machine, the. combinati n of a stand, a mold supporting frame. niountet\\ on said stand to tilt about a horizontal a\;is,=;` a mold supported on said frame, means for tilting the rame in a direction to move the -mold from an elevated receiving position to a lai-ered delivering position. said mold including an outwardly movable palletl supporting carriage, crank arms connected to said axis Iand movable therewith, pitiiien connecting said crank arms to said carriage, connterbalaiicing arias pivotally mounted on said axis. and arranged to open the mold', and tappet arms secured to said axis and provided with lugs and with set screws in said lugs adapted to he engaged by said counterbalancing arms at the complet-ion of their mold opening movement, whereby to turn the axis and slide the carriage. outwardly.

l5. ln a molding machine, the combination of a stand. a mold supporting traine mounted to tilt en said stand `about, .-1 hori- ,'.oiital axis, a mold supported on said trame and adapted to tilt the traine by gravity in a direction to carry the mold downwardly, struts suspended from said frame and adapted to engage the stand 'e'herebv te. hold theframe loehed with the iirild elevated, trip ariiis arranged to reicase the struts'fvoin the stand.a releasing lever operatively connected tosaid trips, and iizeaiis for opening the mold.

ttlln a molding machine, the combination of a stand` a mold supporting frame mounted to tilt thereon about. a horizontal axis, a mold :supported on said traine and arranged to tilt tht frame by gravity, struts suspended. from the mold ends of the frame and adapted to engage tht` stand to lock the frame from tilting. trips adapted to release the struts from the stand, a releasing lever operatively connected to said trips and removably fulcrumed on a portionof the stand, and means for opening the mold. the carri e outwardly at the completion of 2U. ln a molding machine, the combination of a stand, a inold supporting frame mounted to tilt on said stand about a horizoutal axis, a mold mounted on said frame. and embodying separable members, .means for locking the traine against a tilting movement, means for releasing said locking means, said releasing means includingr a foot treenlle,

means for tilting the frame in av direction to' lower the mold, m `ns for opening the mold in lowered position. and a catch carried by said foot. treidle and adapted to engage the frame whereof, to hold the fmine locked with the mold in lowered position.

'21. In a molding machine, the combina- 8 A i i 895,414

,tion of a stand, a moldsupporting frame mounted to tilt` on said stand about a horizontal axis, e mold mounted on said frameand arranged to be carried thereby from en elevated receiving position to e lowered tielivering position, said mold embodying separable partincluding a stripper back and e core-beek, menus for tilting the frame in a lirection to lower the mold, means for withdrawing the core-back independent of any movement of the stripper back, and means for subsequently automatically carrying the stripper back away with the core back.

22. In e. molding'machine, the combination of a stand, a mold support-ing frame mounted to tilt on said stond, a mold support-ed on said frame and arranged to be carried thereby from an, elcveted receiving position to n. lowered delivering position, the. said mold embodving separable. parts including a stripper bnclt and a core-back, slidable tol werds und away from the other parts of the mold, stirrups connected to the ends ol the stripper back, guide rods connected to the core-beek, and movable through said stirrups, the core-back being arranged to abut against said stirrups to limit the independent movement` of the core-back relative to the stripper back, and meansfor drawing the core-back away from the other parts of the mold, whereby during its movement, it. will engage the stirrups of the stripper buck und carry the latter nwny with it.

23. ln a molding machine, the combination of n stand, n mold supporting Trume mounted to tilt on said stamt about a horizontal axis, u mold mounted on snid frame and arranged to' be carried thereby from un elevated receiving posit-ion to a lowered delivering position, said mold embodying separable parts including a core-buck and stripper back, the latter being provided with pivoted dogs and the former with arms designed to be engaged by said dogs, and means for tilting the frame und for permitting the mold parts, except the core-buck, to strip uwuy from thv latter during the tilting of the frame, the engagement of the dogs with the arms ofthe core-back limiting such stripping movement.

24. A mol-.ling machine, comprising u.

' stand, a frame mounted to tilt. on said stond about a horizontal axis, a mold supported on seid frame and arranged to be carried thereby from nn elevated receiving position to e lowvered delivering position, said tnold embodving separable parts includingthe core-bach, :md the mold parts, except the core-back being arranged to draw away from thelatter during the tilting movement, said mold parts also including a strip )er beek, stirru )s secured to seid stripper ack und formed with a slot, rnd a dog adjustably mounted 4in said ore-buck Abeing provided with n tinger designed for engagement by said dog, whereby to limit the drawing away movement oi the mold parts from the cs ire-baek. 25. In a molding nnichine, the combination of a stand, a mold supporting frame on seid stand, n mold mounted on said frame and embodying separable parts including e. stripper back, the stripper buck being de.- signed to move nway from the other parts of the mold, such other parts inchuling hinged doors provided with recessed free ends, the stripper back being formed with beveled ends adapted to enter said recesses, and means for drawing the stripper back out wurdly from the doors, u hereby the beveled joint between the stripper '.buc-k and doors S0 will tend to move said doorsoutwardly posi` tively upon the movement of the. stripper bach outwardly.

26. ln n molding nmchine, the combination of a stand, a mold supporting frame mounted totilt. on said stamt, u mold supported on snid frame und embodying separable parts including u core-latch, cores, und division plntcs clamped to suid core-buch and carried thereby. the frame being arranged to support the mold clov'utcd in receiving position and to lower the mold to a delivering position, means for uutonnttically stripping the core-back from the mold during the movement of the mold from the receiving position to the delivering position, \\'herel y the division plates are 'nutonmticully wit-hdrawn with thel core-lnxch, the sume ns the cores, means for reversing the tilting movement of the frame to curry the mold upwardly, und menus for moving the core-back towurds the other ports ol' the mold, whereby the cores and division boards will be insertedv ns a unit in the mold.

27. ln :i molding machine, the combinntion of n stand, n shaft supported on seid stuud, a mold supporting frame mounted to tilt on said shaft, a mold mounted on said frnme and embodying se )arable parts or mold members, thc. frame oeing arranged to hold the mold elevated in receiving position, means for substantially balancing the mold when lilled on seid shaft, the frame heilig urranged to tilt by the weight of the illed mold so as to curry the mold downwardly by y 895,414 9 tion of ,a stand, n. mold supporting frame during 'die movement of the mold from thaw-*M mounted to tilt upon said stand, a mold supi receiving position to the delivering position. f ported ou said from. and embodying sepa- I Tn tetimony whereof we affix our signaroble parts including a core-back and cores turesin presence of two witnesses.

n carried thereby, the frame being arranged to RUSSELL B. BENNETT. [L. s.] support the mold elevated in receiving posi`- l 'ILLIAM W. BENNETT. [L. 8.] E tion and to lower the mold to the delivering 1 Witncses: position, :md means for autonmticnll sui ii N. V. BENNETT, ping tho coro-buck and cores from the moid l G. H. BENNETT IQ L A-........- -f 

